US20030138214A1 - Optical collimator with molding lens - Google Patents
Optical collimator with molding lens Download PDFInfo
- Publication number
- US20030138214A1 US20030138214A1 US10/163,822 US16382202A US2003138214A1 US 20030138214 A1 US20030138214 A1 US 20030138214A1 US 16382202 A US16382202 A US 16382202A US 2003138214 A1 US2003138214 A1 US 2003138214A1
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- US
- United States
- Prior art keywords
- ferrule
- molding lens
- face
- optical collimator
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 54
- 238000000465 moulding Methods 0.000 title claims abstract description 50
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 description 15
- 229920000647 polyepoxide Polymers 0.000 description 15
- 239000010408 film Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/102—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type for infrared and ultraviolet radiation
Definitions
- the present invention relates to optical collimators, and more particularly to an optical collimator having an integrated molding lens therein.
- optical collimators which provide low-loss light transmission from the input fiber to the output fiber through an optical element.
- Optical collimators are basic building blocks of fiber optic components. The reliability and level of performance of fiber optic components depends heavily on the reliability and performance characteristics of their optical collimators.
- a Graded Index (GRIN) lens is a popular optical element which is utilized in an optical collimator for collimating scattered light.
- a conventional optical collimator comprises an input optical fiber 1 , an output optical fiber 2 , a ferrule 3 , a GRIN lens 4 , a filter 5 , an inner tube 6 and an outer tube 7 .
- a through hole (not labeled) defined in the ferrule 3 receives the optical fibers 1 , 2 .
- the ferrule 3 and the GRIN lens 4 are aligned and fixed in the inner tube 6 with epoxy resin.
- the filter 5 is adhered to an end surface of the GRIN lens 4 with epoxy resin.
- the conventional optical collimator has some disadvantages.
- the filter 5 is directly adhered onto the surface of the GRIN lens 4 with epoxy resin. During heating of the resin, the filter 5 is subjected to uneven heating. This changes and adversely affects performance of the filter 5 . In addition, humidity created by the epoxy adversely affects performance of the optical collimator.
- Second, accurate alignment as between the ferrule 3 and the GRIN lens 4 depends on accurate formation of the inner tube 6 . Therefore, the inner tube 6 must be made with unduly high precision.
- the GRIN lens 4 is conventionally made by the ion exchange method. Therefore, the GRIN lens 4 must be further polished after initial formation. Furthermore, chemicals used in the ion exchange method are harmful to users and pollute the environment.
- an object of the present invention is to provide an inexpensive optical collimator having good optical performance.
- Another object of the present invention is to provide an optical collimator that allows easy and precise fixing of its optical components.
- a further object of the present invention is to provide an optical collimator that is environmentally friendly.
- an optical collimator in accordance with a preferred embodiment of the present invention comprises an input optical fiber and an output optical fiber, a ferrule receiving the input optical fiber and the output optical fiber therein, a molding lens, and a filter.
- the molding lens comprises a solid cylindrical main body, and a pair of cylindrical protrusions respectively extending from opposite ends of the main body.
- the main body comprises an oblique end face, and an opposite aspherical end face.
- the ferrule is received in one protrusion and opposes the oblique end face.
- the filter is received in the other protrusion and opposes the aspherical end face.
- FIG. 1 is a schematic cross-sectional view of a conventional optical collimator
- FIG. 2 is a schematic cross-sectional view of an optical collimator in accordance with a preferred embodiment of the present invention
- FIG. 3 is a schematic cross-sectional view of a molding lens of the optical collimator of FIG. 2;
- FIG. 4 is a schematic cross-sectional view of optical paths of the optical collimator of FIG. 2;
- FIG. 5 is a schematic cross-sectional view of an optical collimator in accordance with an alternative embodiment of the present invention.
- an optical collimator 10 in accordance with a preferred embodiment of the present invention comprises an input optical fiber 11 , an output optical fiber 12 , a ferrule 13 , a molding lens 14 , a filter 15 , an inner tube 20 and an outer sleeve 21 .
- the ferrule 13 has an inmost end 17 , an opposite outmost end (not labeled), and a through hole 16 defined between the inmost end 17 and the outmost end.
- the inmost end 17 of the ferrule 13 and inner ends (not labeled) of the optical fibers 11 , 12 are ground and polished to an oblique angle relative to an imaginary line that is perpendicular to a longitudinal axis of the ferrule 13 .
- the angle is preferably between 6 and 8 degrees.
- a conical opening (not labeled) is defined in the outmost end of the ferrule 13 , in communication with the through hole 16 .
- the optical fibers 11 , 12 are retained in the through hole 16 with epoxy resin.
- the molding lens 14 is made of glass or another suitable material.
- the molding lens 14 comprises a solid cylindrical main body 141 , and a pair of cylindrical protrusions 142 , 143 extending from opposite ends of the main body 141 respectively.
- the main body 141 has an inmost oblique end face 18 , and an opposite outmost aspherical end face 19 .
- the oblique end face 18 is ground and polished so that it forms an oblique angle relative to an imaginary line that is perpendicular to a longitudinal axis of the molding lens 14 .
- the angle is preferably between 6 and 8 degrees.
- the protrusion 142 extends from a periphery of the aspherical end face 19
- the protrusion 143 extends from a periphery of the oblique end face 18 .
- the protrusion 142 forms an internal step 146 .
- An internal diameter of the protrusion 142 at an outward side of the step 146 is greater than an internal diameter of the protrusion 142 at an inward side of the step 146 .
- a length of the protrusion 142 at the outward side of the step 146 is greater than a length of the protrusion 142 at the inward side of the step 146 .
- An internal diameter of the protrusion 143 is substantially equal to a diameter of the ferrule 13 , to enable the protrusion 143 to secure the ferrule 13 therein.
- the inner tube 20 is made of glass material. A length of the inner tube 20 is less than a length of the ferrule 13 . An internal diameter of the inner tube 20 is substantially equal to the diameter of the ferrule 13 , to enable the inner tube 20 to secure the ferrule 13 therein.
- the outer sleeve 21 is made of metallic material. An internal diameter of the outer sleeve 21 is substantially equal to an outer diameter of the inner tube 20 .
- cladding (not labeled) of end portions of the optical fibers 11 , 12 is removed to leave two exposed ends (not labeled) of the optical fibers 11 , 12 respectively.
- the exposed ends are each uniformly coated with a film of epoxy resin.
- the optical fibers 11 , 12 are inserted into the through hole 16 of the ferrule 13 via the conical opening, and secured in the ferrule 13 .
- An outer circumferential surface of the ferrule 13 is uniformly coated with a film of epoxy resin.
- the combined ferrule 13 and optical fibers 11 , 12 is inserted into the inner tube 20 .
- a distance and orientation as between the inmost end 17 of the ferrule 13 and the oblique end face 18 of the molding lens 14 is adjusted.
- An inner end portion (not labeled) of the ferrule 13 is thus secured in the cylindrical protrusion 143 of the molding lens 14 , and another portion of the ferrule 13 is thus secured in the inner tube 20 .
- the filter 15 is uniformly coated with a film of epoxy resin, and inserted into the cylindrical protrusion 142 of the molding lens 14 until it abuts against the step 146 .
- the filter 15 is thus secured in the cylindrical protrusion 142 .
- Outer circumferential surfaces of the molding lens 14 and the inner tube 20 are each uniformly coated with a film of epoxy resin.
- the combined molding lens 14 and inner tube 20 is inserted into the outer sleeve 21 and secured therein.
- a gap (not labeled) is formed at an end of the outer sleeve 21 having the optical fibers 11 , 12 .
- the gap is sealed with epoxy resin.
- a focal point (not labeled) of the molding lens 14 is located at the inmost end 17 of the ferrule 13 .
- a light beam 111 emitted from the input optical fiber 11 is transmitted to the oblique end face 18 of the molding lens 14 , and is refracted to become a light beam 112 .
- the light beam 112 passes out through the aspherical end face 19 of the molding lens 14 to become a light beam 113 .
- the light beam 113 propagates to the filter 15 .
- the filter 15 reflects the light beam 113 as a light beam 123 to the aspherical end face 19 .
- the light beam 113 passes through the aspherical end face 19 to become a light beam 122 .
- the light beam 122 passes through the oblique end face 18 , and is refracted to become a light beam 121 .
- the light beam 121 is focused to a point on the inner end of the output optical fiber 12 .
- FIG. 5 shows an optical collimator 30 in accordance with an alternative embodiment of the present invention.
- the optical collimator 30 comprises two optical fibers 31 , 32 , a ferrule 33 , a molding lens 34 , and a filter 35 .
- the optical collimator 30 does not need the inner tube 20 , the outer sleeve 21 , or the step 146 .
- the filter 35 is fixed to an outmost end of the molding lens 34 , rather than within the molding lens 34 .
- a uniform thin film of epoxy resin is applied on the optical fibers 31 , 32 , which are then inserted into a through hole 36 of the ferrule 33 .
- the combined ferrule 33 and fibers 31 , 32 is inserted into and secured in the molding lens 34 .
- Epoxy resin is applied on an end surface of a protrusion 342 of the molding lens 34 , and the filter 35 is adhered onto the end surface.
- a circumferential gap where the filter 35 adjoins the molding lens 34 is sealed with epoxy resin.
- a gap between a circumferential surface of the ferrule 33 and an end of the molding lens 34 is sealed with epoxy resin.
- a gap between the optical fibers 31 , 32 and an outmost end of the ferrule 33 is sealed with epoxy resin.
- the optical collimator 10 of the preferred embodiment of the present invention has the following advantages.
- the protrusions 142 , 143 are integrated with the molding lens 14 . Therefore the ferrule 13 is easily aligned and secured in the molding lens 14 , and the filter 15 is readily secured in the molding lens 14 . No epoxy resin is required between the filter 15 and any optically functional part of the molding lens 14 . Accordingly, there are no uneven heating or humidity problems.
- the molding lens 14 can be formed as an integral high-precision unit that does not require further polishing. This reduces costs.
- material used to make the molding lens 14 is inexpensive, safe for users and environmentally friendly. The above-described benefits are equally applicable to the optical collimator 30 of the alternative embodiment of the present invention.
- Further alternative embodiments of the present invention may include single fiber optical collimators as well as dual-fiber optical collimators, and may further include other similar optical devices.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to optical collimators, and more particularly to an optical collimator having an integrated molding lens therein.
- 2. Description of the Prior Art
- As optical fiber technology is being more broadly applied in the telecommunications, data communications and community antenna television (CATV) industries, the fiber optic component industry is now confronted with increasingly demanding requirements for good performance and high reliability. Currently, most design and manufacturing of in-line fiber optic components are based on optical collimators, which provide low-loss light transmission from the input fiber to the output fiber through an optical element. Optical collimators are basic building blocks of fiber optic components. The reliability and level of performance of fiber optic components depends heavily on the reliability and performance characteristics of their optical collimators.
- A Graded Index (GRIN) lens is a popular optical element which is utilized in an optical collimator for collimating scattered light. As show in FIG. 1, a conventional optical collimator comprises an input
optical fiber 1, an output optical fiber 2, aferrule 3, a GRIN lens 4, afilter 5, aninner tube 6 and anouter tube 7. A through hole (not labeled) defined in theferrule 3 receives theoptical fibers 1, 2. Theferrule 3 and the GRIN lens 4 are aligned and fixed in theinner tube 6 with epoxy resin. Thefilter 5 is adhered to an end surface of the GRIN lens 4 with epoxy resin. - The conventional optical collimator has some disadvantages. First, the
filter 5 is directly adhered onto the surface of the GRIN lens 4 with epoxy resin. During heating of the resin, thefilter 5 is subjected to uneven heating. This changes and adversely affects performance of thefilter 5. In addition, humidity created by the epoxy adversely affects performance of the optical collimator. Second, accurate alignment as between theferrule 3 and the GRIN lens 4 depends on accurate formation of theinner tube 6. Therefore, theinner tube 6 must be made with unduly high precision. Third, the GRIN lens 4 is conventionally made by the ion exchange method. Therefore, the GRIN lens 4 must be further polished after initial formation. Furthermore, chemicals used in the ion exchange method are harmful to users and pollute the environment. - Therefore, an improved optical collimator that overcomes the above-described numerous disadvantages of the conventional optical collimator is desired.
- Accordingly, an object of the present invention is to provide an inexpensive optical collimator having good optical performance.
- Another object of the present invention is to provide an optical collimator that allows easy and precise fixing of its optical components.
- A further object of the present invention is to provide an optical collimator that is environmentally friendly.
- To achieve the above-mentioned objects, an optical collimator in accordance with a preferred embodiment of the present invention comprises an input optical fiber and an output optical fiber, a ferrule receiving the input optical fiber and the output optical fiber therein, a molding lens, and a filter. The molding lens comprises a solid cylindrical main body, and a pair of cylindrical protrusions respectively extending from opposite ends of the main body. The main body comprises an oblique end face, and an opposite aspherical end face. The ferrule is received in one protrusion and opposes the oblique end face. The filter is received in the other protrusion and opposes the aspherical end face.
- Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompany drawings, in which:
- FIG. 1 is a schematic cross-sectional view of a conventional optical collimator;
- FIG. 2 is a schematic cross-sectional view of an optical collimator in accordance with a preferred embodiment of the present invention;
- FIG. 3 is a schematic cross-sectional view of a molding lens of the optical collimator of FIG. 2;
- FIG. 4 is a schematic cross-sectional view of optical paths of the optical collimator of FIG. 2; and
- FIG. 5 is a schematic cross-sectional view of an optical collimator in accordance with an alternative embodiment of the present invention.
- Referring to FIG. 2, an
optical collimator 10 in accordance with a preferred embodiment of the present invention comprises an inputoptical fiber 11, an outputoptical fiber 12, aferrule 13, amolding lens 14, afilter 15, aninner tube 20 and anouter sleeve 21. - The
ferrule 13 has aninmost end 17, an opposite outmost end (not labeled), and a throughhole 16 defined between theinmost end 17 and the outmost end. To improve optical performance, theinmost end 17 of theferrule 13 and inner ends (not labeled) of theoptical fibers ferrule 13. The angle is preferably between 6 and 8 degrees. A conical opening (not labeled) is defined in the outmost end of theferrule 13, in communication with thethrough hole 16. Theoptical fibers hole 16 with epoxy resin. - Referring also to FIG. 3, the
molding lens 14 is made of glass or another suitable material. Themolding lens 14 comprises a solid cylindricalmain body 141, and a pair ofcylindrical protrusions main body 141 respectively. Themain body 141 has an inmostoblique end face 18, and an opposite outmostaspherical end face 19. Theoblique end face 18 is ground and polished so that it forms an oblique angle relative to an imaginary line that is perpendicular to a longitudinal axis of themolding lens 14. The angle is preferably between 6 and 8 degrees. Theprotrusion 142 extends from a periphery of theaspherical end face 19, and theprotrusion 143 extends from a periphery of theoblique end face 18. Theprotrusion 142 forms aninternal step 146. An internal diameter of theprotrusion 142 at an outward side of thestep 146 is greater than an internal diameter of theprotrusion 142 at an inward side of thestep 146. A length of theprotrusion 142 at the outward side of thestep 146 is greater than a length of theprotrusion 142 at the inward side of thestep 146. An internal diameter of theprotrusion 143 is substantially equal to a diameter of theferrule 13, to enable theprotrusion 143 to secure theferrule 13 therein. - The
inner tube 20 is made of glass material. A length of theinner tube 20 is less than a length of theferrule 13. An internal diameter of theinner tube 20 is substantially equal to the diameter of theferrule 13, to enable theinner tube 20 to secure theferrule 13 therein. Theouter sleeve 21 is made of metallic material. An internal diameter of theouter sleeve 21 is substantially equal to an outer diameter of theinner tube 20. - Referring back to FIG. 2, in assembly, cladding (not labeled) of end portions of the
optical fibers optical fibers optical fibers hole 16 of theferrule 13 via the conical opening, and secured in theferrule 13. An outer circumferential surface of theferrule 13 is uniformly coated with a film of epoxy resin. The combinedferrule 13 andoptical fibers inner tube 20. A distance and orientation as between theinmost end 17 of theferrule 13 and the oblique end face 18 of themolding lens 14 is adjusted. An inner end portion (not labeled) of theferrule 13 is thus secured in thecylindrical protrusion 143 of themolding lens 14, and another portion of theferrule 13 is thus secured in theinner tube 20. Thefilter 15 is uniformly coated with a film of epoxy resin, and inserted into thecylindrical protrusion 142 of themolding lens 14 until it abuts against thestep 146. Thefilter 15 is thus secured in thecylindrical protrusion 142. Outer circumferential surfaces of themolding lens 14 and theinner tube 20 are each uniformly coated with a film of epoxy resin. The combinedmolding lens 14 andinner tube 20 is inserted into theouter sleeve 21 and secured therein. A gap (not labeled) is formed at an end of theouter sleeve 21 having theoptical fibers - Referring to FIG. 4, a focal point (not labeled) of the
molding lens 14 is located at theinmost end 17 of theferrule 13. Alight beam 111 emitted from the inputoptical fiber 11 is transmitted to the oblique end face 18 of themolding lens 14, and is refracted to become alight beam 112. Thelight beam 112 passes out through the aspherical end face 19 of themolding lens 14 to become alight beam 113. Thelight beam 113 propagates to thefilter 15. Thefilter 15 reflects thelight beam 113 as alight beam 123 to theaspherical end face 19. Thelight beam 113 passes through the aspherical end face 19 to become alight beam 122. Thelight beam 122 passes through theoblique end face 18, and is refracted to become alight beam 121. Thelight beam 121 is focused to a point on the inner end of the outputoptical fiber 12. - FIG. 5 shows an
optical collimator 30 in accordance with an alternative embodiment of the present invention. Theoptical collimator 30 comprises twooptical fibers ferrule 33, amolding lens 34, and afilter 35. Compared with theoptical collimator 10 of the preferred embodiment, theoptical collimator 30 does not need theinner tube 20, theouter sleeve 21, or thestep 146. Furthermore, thefilter 35 is fixed to an outmost end of themolding lens 34, rather than within themolding lens 34. A uniform thin film of epoxy resin is applied on theoptical fibers hole 36 of theferrule 33. The combinedferrule 33 andfibers molding lens 34. Epoxy resin is applied on an end surface of aprotrusion 342 of themolding lens 34, and thefilter 35 is adhered onto the end surface. A circumferential gap where thefilter 35 adjoins themolding lens 34 is sealed with epoxy resin. A gap between a circumferential surface of theferrule 33 and an end of themolding lens 34 is sealed with epoxy resin. Finally, a gap between theoptical fibers ferrule 33 is sealed with epoxy resin. - The
optical collimator 10 of the preferred embodiment of the present invention has the following advantages. Theprotrusions molding lens 14. Therefore theferrule 13 is easily aligned and secured in themolding lens 14, and thefilter 15 is readily secured in themolding lens 14. No epoxy resin is required between thefilter 15 and any optically functional part of themolding lens 14. Accordingly, there are no uneven heating or humidity problems. In addition, themolding lens 14 can be formed as an integral high-precision unit that does not require further polishing. This reduces costs. Furthermore, material used to make themolding lens 14 is inexpensive, safe for users and environmentally friendly. The above-described benefits are equally applicable to theoptical collimator 30 of the alternative embodiment of the present invention. - Further alternative embodiments of the present invention may include single fiber optical collimators as well as dual-fiber optical collimators, and may further include other similar optical devices.
- It should be understood that various changes and modifications to the presently preferred embodiments described herein will be apparent to those skilled in the art. Such changes and modifications may be made without departing from the spirit and scope of the present invention and without diminishing the present invention's advantages. Thus, it is intended that such changes and modifications be covered by the appended claims.
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW91200436 | 2002-01-18 | ||
TW91200436U | 2002-01-18 | ||
TW091200436U TW515527U (en) | 2002-01-18 | 2002-01-18 | Optical module having collimating device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030138214A1 true US20030138214A1 (en) | 2003-07-24 |
US6694077B2 US6694077B2 (en) | 2004-02-17 |
Family
ID=21688376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/163,822 Expired - Lifetime US6694077B2 (en) | 2002-01-18 | 2002-06-05 | Optical collimator with molding lens |
Country Status (2)
Country | Link |
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US (1) | US6694077B2 (en) |
TW (1) | TW515527U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110229077A1 (en) * | 2010-03-19 | 2011-09-22 | Davide Domenico Fortusini | Small-form-factor fiber optic interface devices with an internal lens |
CN103901546A (en) * | 2014-03-31 | 2014-07-02 | 中国科学院上海光学精密机械研究所 | Optical fiber collimator |
GB2535803A (en) * | 2015-02-27 | 2016-08-31 | Gooch & Housego Plc | Fibre collimator |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW505242U (en) * | 2002-01-18 | 2002-10-01 | Hon Hai Prec Ind Co Ltd | Optical assembly having collimating function |
US20040052475A1 (en) * | 2002-09-18 | 2004-03-18 | E-Pin Optical Industry Co., Ltd. | Fiber collimator and method of manufacturing the same |
DE10250912B4 (en) * | 2002-10-31 | 2006-04-27 | Osram Opto Semiconductors Gmbh | coupling device |
US7455462B2 (en) * | 2004-08-20 | 2008-11-25 | Avago Technologies Fiber Ip (Singapore) Pte. Ltd. | Zone two fiber optic cable |
JP4593315B2 (en) * | 2005-02-28 | 2010-12-08 | 住友電工デバイス・イノベーション株式会社 | Optical device and method for manufacturing the same, optical device adapter, and optical component stopper |
US9588302B2 (en) | 2012-06-01 | 2017-03-07 | Te Connectivity Corporation | Expanded-beam connector with molded lens |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421383A (en) * | 1980-01-17 | 1983-12-20 | Gte Laboratories Incorporated | Optical fiber connectors |
US6168319B1 (en) * | 1999-08-05 | 2001-01-02 | Corning Incorporated | System and method for aligning optical fiber collimators |
US6343166B1 (en) * | 2000-06-22 | 2002-01-29 | Corning Incorporated | Three-port filter and method of manufacture |
CN2446537Y (en) * | 2000-10-18 | 2001-09-05 | 福建华科光电有限公司 | Optical fiber collimator structure |
-
2002
- 2002-01-18 TW TW091200436U patent/TW515527U/en not_active IP Right Cessation
- 2002-06-05 US US10/163,822 patent/US6694077B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110229077A1 (en) * | 2010-03-19 | 2011-09-22 | Davide Domenico Fortusini | Small-form-factor fiber optic interface devices with an internal lens |
US9069142B2 (en) | 2010-03-19 | 2015-06-30 | Corning Incorporated | Small-form-factor fiber optic interface devices with an internal lens |
US9377589B2 (en) | 2010-03-19 | 2016-06-28 | Corning Incorporated | Small-form-factor fiber optic interface devices with an internal lens |
CN103901546A (en) * | 2014-03-31 | 2014-07-02 | 中国科学院上海光学精密机械研究所 | Optical fiber collimator |
GB2535803A (en) * | 2015-02-27 | 2016-08-31 | Gooch & Housego Plc | Fibre collimator |
GB2535803B (en) * | 2015-02-27 | 2019-01-23 | Gooch & Housego Torquay Ltd | Fibre collimator |
Also Published As
Publication number | Publication date |
---|---|
TW515527U (en) | 2002-12-21 |
US6694077B2 (en) | 2004-02-17 |
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